12554455 has 4 divisors (see below), whose sum is σ = 15065352. Its totient is φ = 10043560.

The previous prime is 12554453. The next prime is 12554461. The reversal of 12554455 is 55445521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12554455 - 2¹ = 12554453 is a prime.

It is a super-2 number, since 2×12554455² = 315228680694050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12554453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255441 + ... + 1255450.

It is an arithmetic number, because the mean of its divisors is an integer number (3766338).

Almost surely, 2^12554455 is an apocalyptic number.

12554455 is a deficient number, since it is larger than the sum of its proper divisors (2510897).

12554455 is an equidigital number, since it uses as much as digits as its factorization.

12554455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510896.

The product of its digits is 20000, while the sum is 31.

The square root of 12554455 is about 3543.2266368382. The cubic root of 12554455 is about 232.4159637710.

Adding to 12554455 its reverse (55445521), we get a palindrome (67999976).

The spelling of 12554455 in words is "twelve million, five hundred fifty-four thousand, four hundred fifty-five".